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(No Model.)

P. H. WILKS. VENTILATOR FOR SHIPS, 8m.

' Patented Nov. 5, 1889.

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UNITED STATES FRANK H. WILKS, OF NEWVPORT, RHODE ISLAND.

VENTILATGR FOR SHIPS, 800.

V SPECIFICATION forming part of Letters Patent No. 414,621, dated November 5, 1889.

Application filed August 5, 1889. Serial No. 319,784. (No model.)

To all whom it mag concern.-

Be it known that I, FRANK H. \VILKS, a citizen of the United States, residing at Newport, in the county of Newport and State of Rhode Island, have invented a new and use ful Ventilator to be Used in the Air-Ports in the Sides of Vessels, or, in other words, the ports through which air and light are admitted to the interior of the vessel, of which the following is a specification.

In the accompanying drawings, in which similar letters refer to similar parts, Figure 1 represents an air-port in a section of the side of a vessel having my improved folding ventilator adjusted therein in such a position as to catch the moving air outside of the vessel and convey it to the interior thereof. Fig. 2 represents a view of Fig. 1 from the interior of the vessel. Fig. Sis a top view of the same, and Fig. 4 is a view of the ventilator as it appears when removed from the airport and folded together.

1) represents a thin strip of spring sheet metal having the projections 9 turned at right angles thereto.

0 c 0 representstrips of the same material as h and pivoted to it at d. The holes in the ends of the strips 0 c are elongated in the direction of the length of the strips in order to allow them to accommodate themselves to the curved form of the strip 1) when it is sprung into the air-porta, or its nearly-straight posit-ion when removed therefrom, as shown in Fig. i.

h represents a chain secured to the inner surfaces of the strips 0 c and also to the strip 1) by means of the rivets i i, and in such a manner as to limit their movement and also allow them to told one upon the other.

g represents a finger-catch secured to the outermost strip 0, by means of which the strips 0 c are extended or folded together..

The operation of the device is as follows: The ventilator, when folded together, as shown in Fig. 4, is taken and sprung into the airport, with the projections e resting against the inside of the rim of the air-port, as illustrated in Fig. 2. The strips 0 c are then extended by means of the finger-catch g.

The ventilator being composed of spring metal, it will conform itself to a great variety of sizes of air-ports.

Having thus described my invention, what I claim, and desire to secure by Letters Patent, is-

A folding ventilator for the air-ports in the sides of vessels, consisting of the strips of spring sheet metal 0 c c, pivoted to the strip of spring sheet metal I), having the projections c, and provided with means for limiting the movement of said strips, substantially as shown and described.

FRANK H. ILES.

Vitn esses:

A. G. WILEUR, F. (J. JENNEY. 

